Help on a fastener.

[Jerry Hawtho]

Any idea where to source a driver to remove this fastener? A Phillips won't work. It is used on a Chinese scope and the head is 5mm.

 

[Enophile]

Butter knife, obviously.

If it doesn't gain purchase in the screw slots, then slip in under the flange and bend up at 3 and 6 o'clock and then grab wirth pliers.

If that fails, Amazon has really cheap 'stripped screw' tool sets.

 

[LonnyG]

Try a Japanese JIS bit just diffrent enough from philips head .

Compatibility: A JIS driver works well on both JIS and Phillips screws.
A Phillips driver will damage a JIS screw because it cannot seat all the way down into the recess
Lonny

 

[avionic]

JIS perhaps.

 

[Richard P]

probably a Robertson square bit is what you need. Phillips will just strip it out . . . .

 

[LonnyG]

and then there is pozidriv
Philips are designed to cam out.
Lonny

 

[rickb119]

If you can't find the correct driver/bit, you might try grinding down the tip of a #3 Phillips.

 

[redk9258]

Weld a nut to it and use a socket wrench! Just kidding, of course!

 

[painttoad]

Weld a nut to it and use a socket wrench! Just kidding, of course!

i've used that technique removing many t47+ seat bolts that people tried using a t45 on.

 

[avionic]

LH drillbit.

 

[Jerry Hawtho]

Thank you all for your ideas. I will continue my search.

 

[eiraved]

Once stripped, a correct sized drill and an "Easy-Out" screw extractor will do the trick.

 

[zebulon1]

Dremel a slot and use a slotted screwdriver?
Find a good fitting JIS bit and use a small amount of fine valve grinding compound on the tip of the JIS bit? It will help grab onto the gaps.

 

[gslikker]

It still looks like a Posidriv, as @LonnyG suggested.

 

[Jerry Hawtho]

Found a small square drive bit in a Neiko Security Faster collection that did the job. Thank for the ideas.

 

[Enophile]

Found a small square drive bit in a Neiko Security Faster collection that did the job. Thank for the ideas.

VICTORY!!!!

 

[LonnyG]

It still looks like a Posidriv, as @LonnyG suggested.

pozidrive has identifiers like this.

 

[gslikker]

Of course, that picture has too square looks in the middle compared to the real thing...

 

[LonnyG]

Damn AI cant even get a screw head right.